A start, or initial point , you use to describe something .
Speed over a period of time that remains the same
Speed at this specific instant
the action or process of being moved
Motion
Velocity
Speed
a measurable extent of some kind .
Constant Speed
increasing speed
A place where something has been put or located
Acceleration
Dimension
the speed of something in a given direction
Overall Speed
Displacement
Position
the rate at which someone or something is able to move or operate.
the moving of something from its place or position
Average Speed
Instantaneous Speed
Reference Point